Wild Bill Peacock sings out the names of some of his dogs while walking at Fort Funston.

Photo: Mike Kepka, The Chronicle

Wild Bill Peacock sings out the names of some of his dogs while...

Wild Bill Peacock sings out the names of some of his dogs while... Photo-6163132.83817 - SFGate

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Profession dog walker Wild Bill Peacock waits for his turn at the doggie water fountain with 8 of his clients dogs at Fort Funston Golden Gate National Recreation Area on the edge of San Francisco, Calif.

After their walk from profession dog walker Wild Bill Peacock, two dogs, Jones and Ely, wait for a promissed treat before heading home from the Fort Funston Golden Gate National Recreation Area on the edge of San Francisco, Calif.